Building Materials MCQs

Question 1

Brittleness of cold is due to an excess of

Accepted Answer

Phosphorus

Answer

Sulphur

Answer

Carbon

Answer

Silicon

Question 2

The moisture content in a well seasoned timber is

Accepted Answer

10% to 12%

Answer

4% to 6%

Answer

15% to 20%

Answer

100%

Question 3

The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout

Accepted Answer

The monsoon

Answer

The winter

Answer

The summer

Answer

None of these

Question 4

Higher pitch of the roofi) results in stronger roofii) results in weaker roofiii) requires more covering materialiv) requires less covering materialThe correct answer is

Accepted Answer

(i) and (iii)

Answer

(i) and (iv)

Answer

(ii) and (iii)

Answer

(ii) and (iv)

Question 5

The method of addition polymerization is used for obtaining:

Accepted Answer

All of these

Answer

Polystyrene

Answer

Polypropylene

Answer

Polyvinylchloride

Question 6

Index number expressing the relative sizes of both coarse and fine aggregates, is called

Accepted Answer

Fineness modulus

Answer

Proportioning of aggregates

Answer

Grading of aggregates

Answer

None of these

Question 7

During smelting process, the combination of fuel in the furnace

Accepted Answer

All the above

Answer

Forms carbon dioxide

Answer

Carbon dioxide with carbon forms carbon mono-oxide

Answer

Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2

Question 8

Bituminous fells are used for

Accepted Answer

Covering A.C. sheets

Answer

Covering sloping roofs

Answer

D.P.C.

Answer

None to these

Question 9

The slag which floats on the surface of the molten iron generally contains

Accepted Answer

All the above

Answer

Lime (CaO) 45%

Answer

Silica (SiO2) 35%

Answer

Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8%